// expect(array).toContain(member);
// expect(fn).toThrow(string);
// expect(fn).toThrowError(string);
// expect(instance).toBe(instance);
// expect(mixed).toBeDefined();
// expect(mixed).toBeFalsy();
// expect(mixed).toBeNull();
// expect(mixed).toBeTruthy();
// expect(mixed).toBeUndefined();
// expect(mixed).toEqual(mixed);
// expect(mixed).toMatch(pattern);
// expect(number).toBeCloseTo(number, decimalPlaces);
// expect(number).toBeGreaterThan(number);
// expect(number).toBeLessThan(number);
// expect(number).toBeNaN();
// expect(spy).toHaveBeenCalled();
// expect(spy).toHaveBeenCalledTimes(number);
// expect(spy).toHaveBeenCalledWith(...arguments);